[poncho-mike]

I was rooting around my old stuff and found a rebuilt 1971 7041264 carb that has never been used. It was built by a friend who worked at a Pontiac dealership from the mid-1960s until about 1975. He was very good with carbs.

The box has the following:
- 70 jets
- 39 metering rods
- BE secondary rods

I don't remember what the carb was built for. At the time, I had a 1973 Formula 350 2-barrel that I was going to convert to 4-barrel. I also had a variety of projects going on back then. My brother killed the 350, so I ended up putting in a stock 400 4-barrel out of a 75 T/A.

Does anybody know what those jets & metering rods would have been optimum for? It's possible those parts came from a H-O Specialties carb kit. I bought carb kits for my 1972 T/A and my 1974 SD455 4-spd T/A from H-O.

Thanks,

Mike

[65 Lamnas]

I’m not sure I understand your question.

The 7041264 was a 400ci carb that came on a lot of different’71 models.
It’s a POE carb that came with 71 jets and 46 rods. The BE secondary rods are very similar to what the factory put in, which were BP.

Being a POE carb, I’d think the 70/39 combo would be quite rich at part throttle. It would not be my pick for primary jetting for a street-driven car.

[poncho-mike]

Originally Posted by 65 Lamnas

I’m not sure I understand your question.

The 7041264 was a 400ci carb that came on a lot of different’71 models.
It’s a POE carb that came with 71 jets and 46 rods. The BE secondary rods are very similar to what the factory put in, which were BP.

Being a POE carb, I’d think the 70/39 combo would be quite rich at part throttle. It would not be my pick for primary jetting for a street-driven car.

I was trying to figure out if the 7041264 was bone stock or set up for some type of performance application. I had this carb rebuilt about 40 years ago, but for some reason I never used it. I wrapped it in plastic wrap, boxed it, and stuck it in the attic. I thought it might have been intended to swap out the 2-barrel intake/carb on my Formula, but I ended up swapping out the 350 for a 400 4-barrel engine.

I suspect the carb kit might have been something I got from H-O Specialties. I bought several of their carb kits, and in general I think they were a little on the rich side.

[Kenth]

70 jets and 39 metering rods were used in the 7027263, 7027273, 7040270 and 7040273 Quadrajets from factory.

The BE secondary rods were used in all 1968-69 Pontiac V8 Quadrajets exc. RAIV.

HTH

[Held for Ransom]

Originally Posted by poncho-mike

I was trying to figure out if the 7041264 was bone stock or set up for some type of performance application. I had this carb rebuilt about 40 years ago, but for some reason I never used it. I wrapped it in plastic wrap, boxed it, and stuck it in the attic. I thought it might have been intended to swap out the 2-barrel intake/carb on my Formula, but I ended up swapping out the 350 for a 400 4-barrel engine.

I suspect the carb kit might have been something I got from H-O Specialties. I bought several of their carb kits, and in general I think they were a little on the rich side.

I remember back in the day, it was suggested to use BE secondary rods.

[steve25]

If you still have that 75 TA carb then that’s what I would rebuild to use.

[poncho-mike]

Originally Posted by steve25

If you still have that 75 TA carb then that’s what I would rebuild to use.

I ended up swapping out a 73 350 2-barrel engine for a 75 400 4-barrel engine.